Efikasnost fungicida u suzbijanju prouzrokovača plamenjače paradajza (Phytophthora infestans (Mont.) de Bary) u uslovima jake pojave oboljenja

Abstract

During the season 2020, the biological efficacy of fungicides propamocarb hydrochloride + fluopicolide, cymoxanil, mandipropamide + difenoconazole and dimothomorph + mancozeb in the control of late blight (Phytophthora infestans) in tomato, was investigated. The experiments were conducted in the localities of Sovljak (Ub), Belosavci (Topola) and Garaši (Aranđelovac). The experiments were carried out as a randomized block system in four replication (EPPO, 1996). A total of five treatments and two assessments were performed at each location. Favorable conditions resulted in a significant disease intensity on untreated plots, which amounted from 17,5-41,3% in the first, and 28,8-95,0% during the second assessment. Fungicide mixture propamocarb-hydrochloride+fluopicolide, showed the efficacy from 94,5-99,4% at the first, and 92,3-97,9% at the second assessment. Fungicide cymoxanil, showed the efficacy of 83,0-92,9% at the first, and 80,0-89,5% at the second assessment. Fungicide mixture mandipropamide+difenoconazole achieved the efficacy from 89,1-99,7% at the first, and 88,2-98,5% during the second assessment. By a combination of dimothomorph+mancozeb the efficacy was ranged from 94,1-97,8% at the first and from 90,7-97,7% at the second assessment.